Compiling with Carbide C++ - File > Import... > Symbian OS > Symbian OS Bld.inf file - Locate `misc\symbian\bld.inf`, select `SBSv2` builder, Next. - Under `Nokia_Symbian3_SDK_v1.0`, select targets with `armv5_urel_gcce` and `armv5_urel` (second only if you have RVCT), Next. - Select All, Next, Finish. - Go to project properties, Carbide.c++>Build Configurations, select correct configuration (e.g: `Phone Release (armv5_urel_gcce) [Nokia_Symbian3_SDK_v1.0]`). - In SIS Builder tab, click Add. - In PKG File drop down list, select `misc\symbian\ClassiCube.pkg`. - Check `Don't sign sis file`, click OK. - Apply and close properties. - Project > Build (Based off comments from https://github.com/ClassiCube/ClassiCube/pull/1360)